Saw guard



Fatente ct.

M, ia.

FRANK E. BEBGHOLD, OF ROCHESTER, NEW YORK.

SAW GUARD.

Application filed February 15, 1924. Serial No. 692,952.

To all whom it may concern Be it known that I, FRANK E. BERGHOLD, acitizen of the United States, residing at Rochester, in the county of'Monroe and State of New York, have invented certain new and usefulImprovements in Saw Guards; and I do hereby declare the following to bea full, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part of this specification, and tothe reference numerals marked thereon.

My present invention has for its object to provide an improved guard forcircular saws or similar appliances which is simple in construction andadapted 'to protect the operator from contact with the saw under allcircumstances, and consists in the improvements hereinafter described,the novel features being pointed out in the claims at the end of thespecification.

In the accompanying drawing:

Figure l is a side elevation of a portion of a saw table showing theguard in position;

Figure 2 is a plan view of the same;

Figure 3 is aside elevation of a portion of the guard when in operation;t

Figure 4 is a sectional view on the line wm of Figure 1;

Figure 5 is a sectional view on the line 3/y of Figure 1, and

Figure 6 is a perspective view of one of the guard sections.

Similar reference numerals in the several views indicate the same parts.I

The saw table indicated by 1 is provided with the usual slot for thepassage of the saw 2 or other similar cuttingtool, theedge of whichprojects above the table. 3 indicates a standard or supportsecured tothe table in line with the saw cutting tool, and preferably of a widthsufliciently narrow to pass freely throughthe kerf, as usual in devicesof this description. Adjustably secured to the upper end of thisstandard 3 is a frame or support 4 on which the guard is mounted. In thepresent instance this frame or support is secured by bolts 5 and 6, theformer being adjustable if desired in slots formed in the standard 3,and the bolt 6 passing through an arcuate slot formedin the standard sothat the frame may be bodily tilted on the bolt 5 if desired to lift theguard from over the saw. The support l is preferably constructed of "asingle piece of strap metal with its ends engaging the standard, andhaving the bars or arms proj ecting over the saw and separated somewhatas shown to provide a space between them.

The guard or saw shielding portion consists of a plurality ofindependent sections, three being shown in the present instance,indicated by 8, 9 and 10, and each composed of sheet metal havingdownwardly extending parallel wings a, and the upper connecting portion6, and they are mounted upon the support 4 so as to be capable notonlyfof a tilting motion, but also of a bodily vertical movementthereon. The lower forward edges of the depending wingsof the guardsections are rounded as shown, and the forward end (i. e. that firstengaged by the 'work) of each has a loose guiding and pivotal connectionwith the support formed, in the present instance by'the verticallyextend ing slots 11 in the depending portions, for the reception oftransversely extending pins and rlvets secured to the side bars of thesupport 4;. The pins or rivets while permitting free verticalmovementserve to maintain the sections in proper position longitudinallyof the supporting arm. The adjacent guard sections have their dependingwings or sides arranged in different vertical planes and preferablyalternately outside of and bethesection 9 is arranged between the sidebars, and the section 10 is arranged similarly to section 8. The rivetor pin 12 operating in the slots 11 of the section 8 is secured rigidlyto the forward end of support 4,

while the projections or rivets 13 upon which the guard plate 10 isguided, are separately secured to the-sides of the supports, as

shown particularly in Figure 4:.

The intermediate guard section 9 is mounted between the arms of thesupport and is supported at its rear end also by means of projectionsextending from op o site sides at its rear end, and adapted to rest ontop of the support, and in the present instance these projections areformed by the ends of a pin 14 extending through both sides of thesection and secured thereto by riveting or otherwise, as shown moreparticularly in Figure 5. The upper surfaces *of the guard sectionimmediately over the supporting or pivot pins are cut away as shown, toprevent the sections interfering Wll3l1 each other Wh n raised. ortilted, bu

the apertures thus" formed are relativel small, and not only do notpermit the outward passage of sawdust, but rather assist,

in causing it to be carried down throughthe slot in thetable byadmitting air through itheseiopenings tot-he current-created by therapid rotation of the saw, thus effectually preventing the-escape of thesawdust into 7 the. .air.

--'In operation, with'the sawirotating in the direction,indicated by thearrow, the ma- 7 v. terialto'he sawed, isepassed tothe saw under the.guard, the firstwsection' 9 ti t g on its "pivotpin, as; shown in dottedlines in Figure '1, and as, the materi l passes; under it, is

i moved bodily upwardfand after. passing :t is section thetel owingsecti ns are lifted inza mila manner, first-til ing and thenrisingvert-ieally being guided by. the rivets V theposition shown inFigure l and the, lower" end of the wings drop in behind the board to,prevent theba ard mo ement o the board, if, by reason of a knot or 7other ob,-

struction there Werea'ny tendencyto move back toward "the operator, theupper edge "ofrthis section-then engaging the forward edges of the wingsof the second section, as

shown-tin said figure so that there is. no'da-n-' gerjof the operatorbeing struck by material being thrownbackward. during the sawing peratio1 Y f ."The. ,co s ue Q n'lsh $011M tvolbe ti 1 r1y= dvantageous, and yreasgn Of he factrthat the ec ensia mad fr m sheet metama r l a i y ampd n formedby. dies into the required shape, and

' the. rm that he'sec n a stant lly skilled operators niform, guards fora great variety of saws,

bemad ch p y and'as m led; y 11 Al houg -.1 pref r f r rea on of conomyand s rapli tytc e n; the loose P o l V neetionbetwe n the support anduard seeti ns by form ng lo s in e W ngs de P per iensnnd. he pins. n hesun n -t, other g ding c nnec ions tor prod ng a siml r snlt could. beemployed:

- Ihave shown h reinQ hh ees ar sect ens, but ebrieus that-@- greaterand b r nnld he empl yed if desired, theelative.arrangement-b ingmainained,

claimassis -invention=:

g rdfeo pr s n a seat, an animate-sf: n en a eat dep nding sear-dsections loosely. mounted onthe supportand capable of independentvertical bodily movement thereon, and means for maintaining theirrelative position longitudinally of the support.

2. A saw guard comprising a support extending over the saw, a pluralityof independent depending guard sections loosely mounted on the supportand capable of independent vertical bodily movement thereon and guidingmeans between said support and the sections arranged at the forward endsof the latter. v

3. A saw guard comprising a suppor t,-a

plurality of independent guard sections loosely 'suspendedfrom'andpermitted free bodily vertical movement thereon and loose guiding. andpivotal connections between the forward portions of the sections and thesupport.

4:; A saw guard comprising a support, a plurality of guard sectionsloosely' suspended from and permitted independent" free bodily verticalmovement thereon, looselpivotal and guiding connections substantially asdescribed, between one of the ends of each of the sections and thesupport permitting pivotal movement in any position of. verticaladjustment. 1

.5. A saw comprising a support, aplurality of independent guard sectionsloosely suspended from and permitted free and independent verticalbodily movement thereon, loose pivotal and guiding connectionssubstantially as described between the guard sections and supportpermitting pivotal movement in anyposition of vertical adjustment, theends of adjacent guard sections being arranged in different verticalplanes to permit independent tilting movement on the pivots.

6. A saw guard comprising a support, a plurality of guard sectionsloosely support- "ed thereon, theedges of adjacent-sections beingarranged out of line with each other, and loose pivotal connectionssubstantially as described, between the sections and the supportfojrmaintaining them in their relative positions longitudinally of thesupport, but permitting their independent vertical and tilting movementswhen engaged by the work.

a 7. A saw guard comprising a support embodying substantially parallelarms, a pin;

rality of independent guard sections having depending portions to coverthe saw" and suspended loosely from the support, said sections beingalternately arranged between and outside of the arms of the support.

8.-A saw guard comprising a supportembodyin'g snbstantiall arallel arms;a splurality of independent guard sections having depending portions tocover the saw, the adj-acent sections eX-tendin alternately outside ofand between the'arms of the support and loose pivotal connectionsbetween; the C:- tions and the support preventing their movementlongitudinally of the arms but permitting their independent vertical andtilting movement thereon.

9. A saw guard comprising a support embodying substantially parallelarms, independent guard sections having depending side portions to coverthe saw and a connecting portion at the top, the adjacent sections beingarranged with their depending portions alternately outside of andbetween the arms of the support and loose pivotal and guidingconnections between one edge of each of the guard sections and thesupport to prevent movement longitudinally thereof.

10. A saw guard comprising a support embodying parallel arms, aplurality of guard sections having depending portions to cover the sawand connecting portions at the top,

the depending portions of adjacent sections being located alternatelyoutside of and between the arms of the support, said depending portionshaving vertical slots at their forward edges and stationary guides onthe support located in said slots.

11. A saw guard comprising a support having the parallel arms, aplurality of independent guard sections supported thereon composed of asingle piece of sheet metal having the sides or depending portionsprovided with vertical slots and an upper connecting portion, theadjacent sections being located alternately outside of and between thearms of the support, and guide pins on the support engaging in saidslots.

FRANK E. BERGHOLD.

